CID PPL. Answer, but I get nobody on other line. Calls all hours of the day. Called last night 2:03am. Never leaves a message. SCAMMER!! Has been calling for over a month now.

CID is PPL.  When I answered, woman wanted to speak to owner of computer.  After telling her I was, she wanted to know why I kept refusing their security updates.  Told her I have my own security system.  Then told her I didn't know who they were.  When I asked, "Who are you?", line went dead.  Added to my blocked call list.

No message left

Microsoft Tech Support (from another site)  I don't know you I don't answer.  Number blocked.

Called my DNC registered landline. Man with heavy accent claiming to be from Microsoft said there was a problem with my computer. Told him I knew about the "problem", but he'd have to call back. He said he would. Now he's fallen for the bait. Let's see how much time I can waste if he calls back.
Next step will be for him to figure out which of my PC's has the problem.